The shims have nothing to do with how the shotgun shoots "squirrel shooting" or "point of aim", (shooting from a sandbag and aiming down the rib with the bead). When aiming the shotgun like when turkey hunting or "squirrel shooting" the gun it should shoot to the same place regardless of the shim. They are for changing the position of the eye while wing shooting when the eye is the rear sight thus affecting where the shot goes.

It is a rare shotgun that shoots to the "point of aim" exactly. That is why it is so important to pattern a shotgun before turkey hunting where patterns are so tight. All shotgun manufacturers have a factory spec that the gun is supposed to shoot within.

One of these guys a lot smarter than me can explain how the cast on, cast off, drop etc can affect the shooting.

George Trulock told me that it is rare for a choke to be cut out of round and cause point of impact problems but it can happen. If all your chokes are doing the same thing including the factory I wouldn't think the tube itself would be a problem.

Just all my opinion.

 

You might go through all that stock adjustment and then find out you threw the POI off even more. A lot of times there's other reasons for your POI to be off, as was stated most shotguns are not dead on to start with.
Could be a number of things throwing it off, choke recesses not bored straight, barrel/ rib/ bead alignment not correct, etc.

Sometimes you just have to live with it or if your gun came with Hi Viz sight you can get a different sight tube or sight all together. You know where the gun is shooting and it's consistent in patterns, to me the easiest way to do it is adjust your bead/sight height and angle.

 

I have the same gun, and I too am left handed. I had the same problem and went through all shims until I put in the neutral cast shim that raises the comb as high as it could go. For some reason this fixed my problem. Can't tell you why, but it did. I put the right cast shim in and it felt like the stock was slamming me in the face everytime I shot. I took that one out right away.

 

FYI .....When needing just a little more adjustment to suit your needs , adding a playing card thickness , piece of paper
to the shims you already have can (might) be the answer you're looking for ?

Most of the time ......because of trigger pull ( weight ) on shotguns.....shooting left ( for lefties ) and right for ( righties )
patterns seem to normally be that way ! :yes: :thumbsup:

 

Thanks everybody. I was going to reshoot some loads this morning before work but it's been raining for 2 days straight where I live and the farmer doesn't want me to drive down to where I'm allowed to shoot. Since I do not own the land and he allows me to hunt there for free there is no way I will go against his wishes.

I have a couple days off before duck season comes back in on November 14. I'll leave the gun alone and shoot again. If it's still low and left I'll play with the shims a little.

I'm starting to think the problem is me still getting accustomed to the gun. I owned a Benelli M2 for nearly 6 years. The Browning has a middle bead, which the Benelli did not. And the Browning trigger is heavier than the Benelli. Hopefully a little more trigger time will fix the issues.